Galaxy S21 SM-G991B U4 Firmware – Android 12
The specific Galaxy S21 SM-G991B U4 Firmware Download Package comes with a Stock ROM of Galaxy S21 SM-G991B U4 Security Patch Level 2022-02-01 (February 1, 2022). This helps you to bypass the FRP lock and revert from the root and custom ROM. Samsung…Read More »